Alternatives to Nullstack
Compare Nullstack alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Nullstack in 2025. Compare features, ratings, user reviews, pricing, and more from Nullstack competitors and alternatives in order to make an informed decision for your business.
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1
Appsmith
Appsmith
Appsmith is an open-source low-code platform designed to help businesses rapidly build custom internal tools and applications. With a drag-and-drop interface and extensive integration capabilities, Appsmith simplifies the development of dashboards, admin panels, and CRUD applications. Developers can also customize functionality using JavaScript, while seamless integration with databases and APIs makes it highly versatile. It supports self-hosting and enterprise-grade security features such as role-based access controls, audit logging, and SOC 2 compliance, making it suitable for organizations of all sizes. Appsmith's AI-powered agent platform enables businesses to build custom conversational agents tailored to their specific needs. These agents can be embedded into various business workflows, enhancing support, sales, and customer success teams. By leveraging data-driven AI, the platform automates tasks and scales operations efficiently.Starting Price: $0.4/hour/user -
2
SpreadJS
GrapeCity
Deliver true Excel-like spreadsheet experiences, fast - with zero dependencies on Excel. Create financial apps, dashboards, charts, pivot tables, performance benchmarks, science lab notebooks, and other similar JavaScript spreadsheet applications. JavaScript spreadsheet components are software elements that help developers add Excel-like functionality to web applications. SpreadJS is a suite of JavaScript spreadsheet controls that includes import/export, data inputs, cell customization, and an extensive calculation engine with over 500 functions. With over 25 years of experience in creating award-winning spreadsheets for professional developers, we already know what you want and need. No other spreadsheet vendor can match that. Put our spreadsheet experience to work for you today.Starting Price: $1,499 per developer -
3
Reflex
Pynecone
Reflex is an open source framework that empowers Python developers to build full-stack web applications entirely in pure Python, eliminating the need for JavaScript or complex frontend frameworks. With Reflex, you can write, test, and refine your app using just Python, making it fast, flexible, and scalable. It features an AI Builder that allows you to describe your app idea, and it will generate a working Python app instantly, complete with backend, frontend, and database integration. Reflex's architecture compiles the frontend down to a single-page Next.js app, while the backend is powered by FastAPI, with communication handled via WebSockets. This setup ensures that all the app logic and state management stay in Python and run on the server. The framework offers over 60 built-in components based on Radix UI and supports custom React components, enabling developers to create complex UIs without writing HTML or CSS.Starting Price: $20 per month -
4
Telerik DevCraft
Telerik
Get 1,250+ .NET and JavaScript components for building feature-rich and professionally designed web, desktop, and mobile apps in less time and with fewer efforts. Plus, complete .NET embedded reporting. Standardize the look and feel of your applications across the board. Out-of-the-box themes and limitless customization options allow you to quickly present a professional, well-packed frontend to your users. Simplify your everyday software development tasks. Cut down with up to 50% development time, increase productivity, and follow the latest technology and user experience trends. Review demos, tutorials, feature descriptions, code samples, and detailed APIs. Benefit from leading support even during your free trial, extensive documentation, and community forums. Enjoy the finest and most complete software development tooling collection with .NET and JavaScript UI components for web, desktop, and mobile applications, reporting and report management solutions, automated testing, etc.Starting Price: $1,299 per developer -
5
Wijmo
GrapeCity
High-performance JavaScript UI controls for enterprise apps. Build lightweight, high-speed HTML5/JavaScript apps with zero dependencies, fast! New in Wijmo 2022 v1: - Inventory management reference app built in Angular - Website traffic monitoring reference app built in Angular - FlexMap added to GeoDashboard reference app - Rotated Spline Chart - Re-order FlexGrid rows with drag and drop General Features of Wijmo: - CellTemplates for Angular, React and Vue FlexGrids - Use Wijmo’s single set of true JavaScript controls in any framework, including Angular, React, and Vue.js - Use controls as native HTML elements with Wijmo Web Components - Filter, group, sort, and more with FlexGrid, JavaScript’s fastest data grid - Visualize data with 80+ charts and controls - Instantly analyze and aggregate data with OLAP Pivot GridStarting Price: $695 per user per year -
6
Oracle ADF Faces
Oracle
Faster, simpler, and richer user interface development Oracle ADF Faces components is a set of over 150 Ajax-enabled JSF components that let you build a richer web user interface for Java EE applications. Oracle ADF Faces components are free to develop and deploy through Oracle ADF Essentials. Over 150+ AJAX-enabled components. Extensive data visualization components, with JSF 2 support. Complete JavaScript API. Drag and drop framework. Dialog and popup framework. Navigation menu framework. Internationalization and accessibility support. Tablet/touch gesture support. Declarative partial page rendering. Support for skinning. Support for page templates, reusable page regions, and declarative components. Support for the Oracle Alta UI. Integration with ADFc to support TaskFlows and bookmarking. Integration with ADFm to support data bindings. Oracle ADF security support.Starting Price: Free -
7
Essential Objects
Essential Objects
Quickly extend your .NET application with PDF file generating/processing ability, or seamlessly integrate the popular Chromium browser engine both for UI or background task with extensive customization options such as custom resource loader and JavaScript extension. Not suitable for newer ASP.NET framework such as MVC, but perfect for maintaining legacy WebForm code/modules in a larger MVC application. Add browser capacity in Windows.Forms and WPF app simply by drag and drop. Extensive customization options for UI, resource loader and JavaScript interface. Support .Net Framework 2.0 and above, .NET Core 3.0 and above.Starting Price: $799 one-time payment -
8
daisyUI
daisyUI
DaisyUI is a Tailwind CSS component library that enhances development efficiency by providing semantic class names for UI components, such as cards and toggles. This approach reduces the need to write extensive utility classes, resulting in cleaner and more maintainable HTML. DaisyUI is built on top of Tailwind CSS, allowing developers to customize components using Tailwind's utility classes. It operates as a pure CSS plugin without JavaScript dependencies, ensuring compatibility across various JavaScript frameworks. Installation is straightforward, and it supports unlimited themes through customizable color names that utilize CSS variables, facilitating features like dark mode without additional class names. daisyUI is built on top of Tailwind CSS so you can customize everything using utility classes. daisyUI is a plugin for Tailwind CSS. It works on all JS frameworks and doesn't need a JS bundle file.Starting Price: $49 one-time payment -
9
Kendo UI
Progress Software
Kendo UI is the ultimate collection of JavaScript UI components with libraries for jQuery, Angular, React, and Vue. Quickly build eye-catching, high-performance, responsive web applications—regardless of your JavaScript framework choice. Easily add advanced JavaScript components into your existing or new designs. Kendo UI’s hundreds of components handle everything you need to satisfy your users’ requirements. Add advanced components such as data grids, charts, schedulers, and calendars with just a few lines of code. Each is crafted for performance and customizability. Switching frameworks and starting new projects won’t require a new license or a big learning curve. Everything is included and up-to-date, APIs are consistent and theming is easy. Our QA process coupled with world-class support teams and a large user community means that our components will always work the way they’re supposed to—guaranteed.Starting Price: $899 -
10
ILLA Cloud
ILLA Cloud
Accelerate your internal tools development. A low-code platform for developers to build internal tools in minutes. With the SQL Generate feature, you can input natural language and get SQL statements that can be run directly. This works in databases like MySQL, Postgre, Supabase, etc. We offer developers a high degree of freedom to implement richer functionality through JavaScript, wrapping JS statements with {{Template Syntax}} to place at any string type variable spaces for more variety in the output. ILLA can connect to the mainstream databases or any data connected through APIs and add actions to chain to user events. It tightly integrates the data obtained from the back-end with the front-end components, allowing developers to write simple data calls to achieve massive information interaction.Starting Price: $10 per editor per month -
11
Webix
Webix
JavaScript UI library and framework for speeding up web development. JS Framework for cross-platform web Apps development 102 UI widgets and feature-rich CSS / HTML5 JavaScript controls. Save at least 3000+ development hours by using ready-made widgets and UI controls. Develop Web UI 30% faster. We have accumulated the best design ideas. We have meticulously considered UX of each Webix component for five conceptual designs. Our support service specialists know everything about our library and can help you solve any problem. We also have an official support forum where you can discuss issues with our developers. By using Webix JS framework you receive an elegant and lightweight code based on object-oriented programming concepts. Associate your project with jQuery JavaScript library, MVC frameworks AngularJS, React, Vue.js, Backbone.js, third party UI extensions.Starting Price: $848 -
12
PlayCode
PlayCode
The #1 JavaScript playground and sandbox to write, run and repl it. JavaScript playground is perfect for learning and prototyping javascript sandboxes. Fast and easy to use. Start a JavaScript playground project using ready-to-use templates. JavaScript is one of the most popular languages for web development. It is needed in order to make web pages alive. Today JavaScript can be run not only in the browser but also on the server. Learning, practicing and prototyping is much easier right in the javascript playground because the browser is designed to run javascript. This is the perfect coding IDE. In turn, PlayCode tries to use all the browser features to ensure maximum, comfortable run javascript sandbox. Read, evaluate, print, and loop, a simple pre-configured coding environment that quickly shows the JavaScript execution result. So, you just open PlayCode without installing anything, write code, and JavaScript playground runs your code instantly and shows the result.Starting Price: $4.99 per month -
13
Semantic UI React
Vercel
Semantic UI React is the official React integration for Semantic UI. jQuery-free, declarative API, augmentation, shorthand props, sub-components, auto controlled state. jQuery is a DOM manipulation library. It reads from and writes to the DOM. React uses a virtual DOM (a JavaScript representation of the real DOM). React only writes patch updates to the DOM, but never reads from it. It is not feasible to keep real DOM manipulations in sync with React's virtual DOM. Because of this, all jQuery functionality has been re-implemented in React. Control the rendered HTML tag, or render one component as another component. Extra props are passed to the component you are rendering as. Augmentation is powerful. You can compose component features and props without adding extra nested components. Shorthand props generate markup for you, making many use cases a breeze. All object props are spread on the child components.Starting Price: Free -
14
Gridsome
Gridsome
Gridsome makes it easy for developers to build static generated websites & apps that are fast by default. Vue.js, GraphQL & all the power of Node.js & the JavaScript ecosystem. Develop locally and get instant hot-reloading for any code change. Gridsome builds ultra performance into every page by using the PRPL pattern. You get code splitting, asset optimization, progressive images, and link prefetching out of the box. Gridsome sites get almost perfect page speed scores by default. Gridsome generates static PWAs. Only critical HTML, CSS, and JavaScript get loaded first. The next pages are then prefetched so users can click around incredibly fast without page reloads, even when offline. Gridsome sites load as static HTML before they hydrate into fully Vue.js-powered SPAs. This makes it possible for search engines to be able to crawl content and give better SEO ranking, and still have all the power of Vue.js. -
15
DataViewsJS
GrapeCity
DataViewsJS enables you to easily and professionally customize the presentation of your data using different layouts, row templates, data fields, calculations, and editing modes that are completely and easily customizable. Leverage the powerful calc engine to perform calculations on any set of JSON data. With our calculation engine, your computing power is optimized for large data and complex calculations. DataViewsJS was designed from the start to be a fast, full-featured, and completely customizable developer tool for efficient data display and editing to meet any of your JavaScript application’s needs. Localized resources for Chinese, Japanese, and Korean are included with DataViewsJS. Additional languages can be easily added by creating your own resource files and setting them with simple script code. Modern data presentation patterns such as those you see on social networks and other sites become easy when you use DataViewsJS interchangeable layouts.Starting Price: $999 per year -
16
Ant Design
Ant Design
This is Ant Design's internal standard for evaluating design quality. Based on the assumption that "everyone is pursuing happiness at work", we have added the two values of "Meaningfulness" and "Growth" on the basis of "Certainty" and "Naturalness" to guide each designer towards better judgment and decision-making. Ant Design React is dedicated to providing a good development experience for programmers. Before starting, it is recommended to learn React and ES2015 first, and correctly install and configure Node.js v8 or above. The official guide also assumes that you have intermediate knowledge about HTML, CSS, and JavaScript, and React. If you are just starting to learn front-end or React, it may not be the best idea to use the UI framework as your first step.Starting Price: Free -
17
Blazor
Microsoft
Blazor lets you build interactive web UIs using C# instead of JavaScript. Blazor apps are composed of reusable web UI components implemented using C#, HTML, and CSS. Both client and server code is written in C#, allowing you to share code and libraries. Blazor is a feature of ASP.NET, the popular web development framework that extends the .NET developer platform with tools and libraries for building web apps. Blazor can run your client-side C# code directly in the browser, using WebAssembly. Because it's real .NET running on WebAssembly, you can re-use code and libraries from server-side parts of your application. Alternatively, Blazor can run your client logic on the server. Client UI events are sent back to the server using SignalR - a real-time messaging framework. Once execution completes, the required UI changes are sent to the client and merged into the DOM.Starting Price: Free -
18
E-ICEBLUE
E-ICEBLUE
E-iceblue provides a comprehensive suite of professional development libraries and APIs designed to enable developers to create, read, write, edit, convert, print, manipulate and view a wide range of document formats programmatically across multiple programming environments without relying on external applications like Microsoft Office or Adobe Acrobat. Its product range includes Spire.Office and individual components for .NET platforms (such as Spire.Doc, Spire.XLS, Spire.Presentation, Spire.PDF, Spire.Barcode, Spire.Email and Spire.OCR) that handle Word, Excel, PowerPoint, PDF, barcode generation and email operations in C#, VB.NET, ASP.NET, .NET Core, Xamarin and WPF applications, plus viewer libraries for embedded document display. E-iceblue also offers equivalent APIs for Java, C++, Python and JavaScript, as well as mobile and cloud libraries (including Spire.Cloud.Office with HTML5 browser support for Word and Excel), supporting document processing tasks. -
19
TypeScript
TypeScript
TypeScript adds additional syntax to JavaScript to support a tighter integration with your editor. Catch errors early in your editor. TypeScript code converts to JavaScript, which runs anywhere JavaScript runs: In a browser, on Node.js or Deno and in your apps. TypeScript understands JavaScript and uses type inference to give you great tooling without additional code. TypeScript was used by 78% of the 2020 State of JS respondents, with 93% saying they would use it again. The most common kinds of errors that programmers write can be described as type errors: a certain kind of value was used where a different kind of value was expected. This could be due to simple typos, a failure to understand the API surface of a library, incorrect assumptions about runtime behavior, or other errors.Starting Price: Free -
20
GigaMe
GigaMe
GigaMe is the best platform for Front end/UI developer to prepare for interviews and maximize successful interview outcomes. Our platform will help you to, not only utilize your skillset, but also to expand them as well. Bring your breadth of JavaScript coding knowledge to life in well-organized, precise solutions. We provide easy and understandable ways to solve problems in OO JavaScript, Data structures and algorithms. Learn to use progressive enhancement techniques and and technologies using HTML5/CSS3. Have a clear vision of some of the most exciting new features of HTML5 and CSS3 to develop single page application. Expand your knowledge on how to answer in-depth in ReactJS topics like HOC, State, Hooks API, Reusable component, ReduxJS with examples and solutions. We have covered a multitude of the questions asked from real technical interviews, consisting of more than 500+ problems, coding questions, and solutions. -
21
Vue.js
Vue.js
Builds on top of standard HTML, CSS and JavaScript with intuitive API and world-class documentation. Truly reactive, compiler-optimized rendering system that rarely requires manual optimization. A rich, incrementally adoptable ecosystem that scales between a library and a full-featured framework. Vue is a JavaScript framework for building user interfaces. It builds on top of standard HTML, CSS and JavaScript, and provides a declarative and component-based programming model that helps you efficiently develop user interfaces, be it simple or complex. Vue extends standard HTML with a template syntax that allows us to declaratively describe HTML output based on JavaScript state. Vue automatically tracks JavaScript state changes and efficiently updates the DOM when changes happen. Vue is a framework and ecosystem that covers most of the common features needed in frontend development. -
22
React Bootstrap
React Bootstrap
The most popular front-end framework rebuilt for React. React-Bootstrap replaces Bootstrap JavaScript. Each component has been built from scratch as a true React component, without unneeded dependencies like jQuery. As one of the oldest React libraries, React-Bootstrap has evolved and grown alongside React, making it an excellent choice as your UI foundation. Built with compatibility in mind, we embrace our bootstrap core and strive to be compatible with the world's largest UI ecosystem. By relying entirely on the Bootstrap stylesheet, React-Bootstrap just works with the thousands of Bootstrap themes you already love. The React component model gives us more control over form and function of each component. Each component is implemented with accessibility in mind. The result is a set of accessible-by-default components, over what is possible from plain Bootstrap.Starting Price: Free -
23
JavaScript Obfuscator Pro
JavaScript Obfuscator
JavaScript Obfuscator Pro is an advanced code protection platform designed to secure JavaScript against reverse engineering and intellectual property theft. Its flagship VM obfuscation feature transforms readable JavaScript into custom bytecode executed by a proprietary virtual machine. This approach removes standard JavaScript structures entirely, making static analysis and decompilation extremely difficult. Each obfuscation run generates unique bytecode and a custom VM, ensuring no reusable deobfuscation patterns exist. JavaScript Obfuscator Pro supports layered security by combining VM obfuscation with additional protection techniques. The platform works through a simple web interface or API, allowing developers to protect code in just a few steps. JavaScript Obfuscator Pro is built for scenarios where maximum code secrecy is required. -
24
JavaScript
JavaScript
JavaScript is a scripting language and programming language for the web that enables developers to build dynamic elements on the web. Over 97% of the websites in the world use client-side JavaScript. JavaScript is one of the most important scripting languages on the web. Strings in JavaScript are contained within a pair of either single quotation marks '' or double quotation marks "". Both quotes represent Strings but be sure to choose one and STICK WITH IT. If you start with a single quote, you need to end with a single quote. There are pros and cons to using both IE single quotes tend to make it easier to write HTML within Javascript as you don’t have to escape the line with a double quote. Let’s say you’re trying to use quotation marks inside a string. You’ll need to use opposite quotation marks inside and outside of JavaScript single or double quotes.Starting Price: Free -
25
DHTMLX
DHTMLX
DHTMLX is a JavaScript UI library that provides a set of highly customizable and flexible components for building modern and responsive web applications. The library includes more than 30 UI components, such as Gantt, Scheduler, Kanban, diagrams, charts, grids, spreadsheets, calendars, trees, forms, and more. DHTMLX helps to advance web development and build feature-rich data-intensive applications of any complexity. One of the key advantages of DHTMLX is its compatibility with different web frameworks, including React, Angular, and Vue.js, which makes it a great choice for developers who are already working with these frameworks. DHTMLX is also designed with performance in mind. Its components are optimized for fast rendering. A comprehensive and rich API provides a straightforward way to manipulate JavaScript/HTML5 UI widgets. The library has detailed API documentation, tutorials, and examples that help developers quickly get up to speed and start building their apps.Starting Price: $79 -
26
Sencha Ext JS
Sencha
Sencha Ext JS is a comprehensive JavaScript application framework for building feature-rich, cross-browser-compatible web and mobile applications. It includes a library with 140+ high-performance customizable components, a set of tools and a powerful UI Framework. Key Features Rich UI Components – Includes a variety of pre-built UI elements such as grids and trees, menus and toolbars, forms and buttons, etc. Cross-platform compatibility - Supports major desktop and mobile web browsers including IE Firefox Chrome Safari and Opera. Data Packages – Includes data components to interact with various data sources including JSON, XML and database connections. Theming and Skinning - Allow easy skinning and theming of the UI with CSS. Development Tools - Includes an extensive set of development tools including a visual designer and debugger. Large Community - Has an active and large community of developers who provide support, extensions, etc.Starting Price: $1,295 one-time payment -
27
TaffyDB
TaffyDB
TaffyDB is an open source JavaScript library that brings powerful database functionality into your JavaScript applications. It offers a small file size with extremely fast queries and a powerful JavaScript-centric data selection engine. TaffyDB includes database-inspired features such as count, update, and insert, and provides robust cross-browser support. It is easily extended with your own functions and is compatible with any DOM library, as well as server-side JavaScript. Creating a database is straightforward, you can create a new empty database, a database with a single object, an array, or a JSON string. Once you have a database, you can run queries against it by calling the root function and building filter objects. TaffyDB allows you to filter using the database name and object comparison, access data easily, and modify data on the fly. You can also use functions to give you full control over the results of your query.Starting Price: Free -
28
Plotly Dash
Plotly
Dash & Dash Enterprise let you build & deploy analytic web apps using Python, R, and Julia. No JavaScript or DevOps required. Through Dash, the world's largest companies elevate AI, ML, and Python analytics to business users at 5% the cost of a full-stack development approach. Deliver apps and dashboards that run advanced analytics: ML, NLP, forecasting, computer vision and more. Work in the languages you love: Python, R, and Julia. Reduce costs by migrating legacy, per-seat licensed software to Dash Enterprise's open-core, unlimited end-user pricing model. Move faster by deploying and updating Dash apps without an IT or DevOps team. Create pixel-perfect dashboards & web apps, without writing any CSS. Scale effortlessly with Kubernetes. Support mission-critical Python applications with high availability. -
29
Backbone.js
Backbone.js
Backbone.js gives structure to web applications by providing models with key-value binding and custom events, collections with a rich API of enumerable functions, views with declarative event handling, and connects it all to your existing API over a RESTful JSON interface. When working on a web application that involves a lot of JavaScript, one of the first things you learn is to stop tying your data to the DOM. It's all too easy to create JavaScript applications that end up as tangled piles of jQuery selectors and callbacks, all trying frantically to keep data in sync between the HTML UI, your JavaScript logic, and the database on your server. For rich client-side applications, a more structured approach is often helpful. With Backbone, you represent your data as Models, which can be created, validated, destroyed, and saved to the server.Starting Price: Free -
30
Jspreadsheet
Jspreadsheet
Jspreadsheet is a robust full-stack JavaScript data grid solution that directly integrates the functionality and user-friendly experience of spreadsheet applications like Excel and Google Sheets into your web applications. It offers a smooth, efficient user interface, enabling batch actions, table manipulation, and a host of other features that ensure flawless compatibility between your web application and Excel/Sheets. This familiar environment enhances productivity, simplifies user adoption, and minimizes the need for extensive training. Jspreadsheet is a comprehensive solution designed to meet a variety of application requirements in spreadsheet and data management for web platforms. It optimizes workflow development, streamlines process automation, and facilitates the smooth transition of tasks from Excel to the web. Additionally, Jspreadsheet provides a wide range of extensions to address diverse needs within the data grid and spreadsheet ecosystem, making it a versatile choice.Starting Price: $49 per developer -
31
GuideChimp
Labs64
GuideChimp can be seamlessly integrated with any web app and ready to drop into your application using React, Vue.js, Angular, ES Modules, or plain JavaScript and HTML. GuideChimp works well with tools you already use and can be easily customized through SCSS and clean CSS to look like an integral part of your product. GuideChimp is extendable using out-of-the-box and third-party plugins, which enhance functionality with usability, feedback, analytics, etc. tools. GuideChimp is well documented and the open-source library is easy to integrate and have a very short learning curve. GuideChimp is simple and robust enough to provide results with minimal effort! Set up it in just 3 minutes! Let GuideChimp look like an integral part of your software product by configuring its look & feel. Raise visitors attention by adding a beacon to any element on the web page.Starting Price: $60 per year -
32
WebDataRocks
WebDataRocks
WebDataRocks is a simple free JS library for creating functional and easy-to-use pivot tables. It can be used with Angular, Vue, React or any other framework. Free Flexible in customization JavaScript based client-side component Loads 1MB of JSON or CSV data files Full set of enterprise features Integration with 3rd party charting libraries Full set of enterprise features Features like filtering, sorting, grouping, conditional and number formatting, calculated values, totals are available for efficient work with your data. It supports printing or exporting web report to PDF, Excel or HTML with just one click. Ready-to-use modern UI The tool offers a classy spreadsheet-like interface optimized both for browsers and apps. All principles of reliability and excellent user experience are already implemented in this web reporting tool.Starting Price: Free -
33
Fluree
Fluree
Fluree is an immutable RDF graph database written in Clojure and adhering to W3C standards, supporting JSON and JSON-LD while accommodating various RDF ontologies; it boasts a scalable, cloud-native architecture utilizing a lightweight Java runtime, with individually scalable ledger and graph database components, embodying a "Data-Centric" ideology that treats data as a reusable asset independent of singular applications, underpinned by an immutable ledger that secures transactions with cryptographic integrity, alongside a rich RDF graph database capable of various queries, and employs SmartFunctions for enforcing data management rules, including identity and access management and data quality. -
34
Toolpad Core
MUI
Toolpad Core is a self-hosted, low‑code internal tool builder tailored for full-stack and back-end developers, empowering them to craft admin interfaces, dashboards, and CRUD apps using drag‑and‑drop visuals while retaining full code control. Built on MUI's robust React component ecosystem, integrating MUI Core and X libraries, it offers a Postman‑like query builder for REST APIs, the ability to import custom React components, and smooth integration with Node.js backends, eliminating the need for boilerplate API wiring. Toolpad operates entirely locally, storing configuration in version-control–friendly files and giving developers the freedom to extend from low‑code prototypes to production‑grade features using JavaScript and TypeScript. With deep alignment to React, TypeScript, Next.js, and local IDE workflows, Toolpad bridges the gap between rapid UI assembly and maintainable, production-ready development.Starting Price: $180 per year -
35
JsPHP
JsPHP
The free open-source JsPHP library. The JsPHP website is a 100% free community resource that provides a collaborative platform and web-based Integrated Development Environment (IDE) for building an open-source JavaScript library called JsPHP that provides an implementation of the PHP API for JavaScript environments. An Integrated Development Environment (IDE) is a tool for writing computer programs, and that's what the JsPHP website is a tool for creating and testing software. In the JsPHP IDE registered users can edit the JavaScript functions in the JsPHP library and can also write code to test that those functions are working properly or to test how well those functions perform (how fast they run when they are executed on the computer). If you're just starting out with learning JavaScript then helping out at JsPHP is the perfect way for you to get started because we have lots of beginner-level work that needs to be done that you could help us with.Starting Price: Free -
36
JSON
JSON
JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language Standard ECMA-262 3rd Edition - December 1999. JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language. JSON is built on two structures: 1. A collection of name/value pairs. In various languages, this is realized as an object, record, struct, dictionary, hash table, keyed list, or associative array. 2. An ordered list of values. In most languages, this is realized as an array, vector, list, or sequence. These are universal data structures. Virtually all modern programming languages support them in one form or another.Starting Price: Free -
37
Bryntum
Bryntum
Bryntum is a leading provider of high-performance scheduling solutions for the web. Our suite of JavaScript components—including Gantt, Scheduler, Task Board, and Calendar—enables developers to build modern project management applications with features like drag-and-drop scheduling, resource management, and interactive timelines. Seamless integration with popular frameworks such as React, Angular, Vue, and Ext JS ensures flexibility and rapid implementation. From streamlining planning workflows to visualizing complex schedules and optimizing resource allocation, Bryntum’s solutions empower organizations across industries to deliver robust, intuitive project planning tools at scale.Starting Price: $680 -
38
Workflow Engine
Optimajet
Embeddable .NET library for running workflows in .NET applications with integrated HTML5 graphical workflow designer. Designer allows you to easily create interactive workflows of any complexity, there’s no need to draft them programmatically. Workflow Engine is a backbone solution for business process management (BPM) which makes it feasible to automate the workflow design by using low-code visual builders. It is based on the .NET framework and JavaScript libraries. Workflow Engine enables workflow processing and correct integration by providing a graphic designer to create process workflow schemes and at the same time, this software component facilitates the management, execution, and visualization of workflow processes. Integration with solutions based on other technologies or databases is roughly the same and should not entail any difficulties. Workflow Engine offers its users all the components necessary to implement workflows of any complexity.Starting Price: $499 one-time payment -
39
TanStack
TanStack
TanStack is an open source, framework-agnostic collection of high-quality, headless, and type-safe utilities designed for modern web development, offering powerful capabilities in state management, data fetching, routing, UI logic, tables, data grids, charts, and reactive client-side storage. Its ecosystem includes core libraries such as TanStack Query for asynchronous server-state fetching and caching, TanStack Router for full-stack and client-side routing with full TypeScript inference and URL state support, and TanStack Table for headless, customizable tables and data grids across TS/JS frameworks. Additional tools, such as TanStack DB, extend the reactive store with live queries and optimistic mutations, while frameworks like TanStack Start provide a full-stack React experience, including SSR, streaming, server functions, and bundling, powered by its own router and Vite. Collectively, TanStack tools emphasize developer control, performance, scalability, and type safety.Starting Price: Free -
40
PureScript
PureScript
PureScript is a strongly typed, purely functional programming language that compiles JavaScript. It enables developers to build robust web applications, web servers, and mobile apps using functional programming techniques. PureScript offers features such as algebraic data types, pattern matching, row polymorphism, extensible records, higher-kinded types, type classes with functional dependencies, and higher-rank polymorphism. The language emphasizes strong static typing and pure functions, ensuring code reliability and maintainability. Developers can compile PureScript code into readable JavaScript, facilitating seamless integration with existing JavaScript codebases. The ecosystem includes an extensive collection of libraries, excellent tooling, and editor support with instant rebuilds. An active community provides numerous learning resources, including the PureScript book, which offers practical projects for beginners. -
41
TypeORM
TypeORM
TypeORM is an ORM that can run in NodeJS, Browser, Cordova, PhoneGap, Ionic, React Native, NativeScript, Expo, and Electron platforms and can be used with TypeScript and JavaScript (ES5, ES6, ES7, ES8). Its goal is to always support the latest JavaScript features and provide additional features that help you to develop any kind of application that uses databases - from small applications with a few tables to large scale enterprise applications with multiple databases. TypeORM supports both Active Record and Data Mapper patterns, unlike all other JavaScript ORMs currently in existence, which means you can write high quality, loosely coupled, scalable, maintainable applications the most productive way. -
42
Syncfusion Essential Studio
Syncfusion
Includes more than 1,600 components and frameworks for Windows Forms, WPF, ASP.NET (Web Forms, MVC, Core), UWP, WinUI, Xamarin, Flutter, JavaScript, Angular, Blazor, Vue and React. Includes top requested components such as charts, grids, schedulers, diagrams, maps, gauges, docking, ribbons, and many more! Working with the industry’s best and brightest minds to streamline your business. Includes more than 1,700 components and frameworks for major platforms. A wide range of product demos and training, including video tutorials, documentation, and KBs. Every control is fine-tuned to work with a high volume of data. Create powerful apps by viewing and editing Excel, PDF, Word, and PowerPoint files. Truly unlimited dedicated support system via the public forum, feature & feedback page, live chat, and support tickets. Easy integration of tools to blend Syncfusion controls with your project.Starting Price: $495 one-time payment -
43
JxBrowser
TeamDev
JxBrowser is a cross-platform Java library that integrates a Chromium-based web browser component into Java applications. It offers a comprehensive API for DOM access, Java-to-JavaScript communication, printing, file downloads, and more. It includes lightweight visual components for Swing, JavaFX, SWT, and Compose Desktop (coming soon) UI toolkits to display HTML, PDF, and WebGL content in Java desktop apps.Starting Price: $1799 per Indie license -
44
Web Robots
Web Robots
We provide B2B web crawling and scraping services. Automatically locates and extracts data from web pages. Provides you with an Excel or CSV file. Runs in your Chrome or Edge browser as extension. Fully managed web scraping service. We write, run and maintain robots based on your requirements. Deliver data to your database or API. You can see data, source code, statistics and reports on the customer portal. Guaranteed SLA and excellent customer service. Use our platform and write your own robots in JavaScript. Easy to write using JavaScript and jQuery. Powerful engine using full Chrome browser. Auto-scaling and reliable. Contact us for demo space approval. -
45
JavaScript InfoVis Toolkit
SenchaLabs
The JavaScript InfoVis Toolkit provides tools for creating interactive data visualizations for the web. The best way to start is to take a look at the demos page. Each demo has a See the Example Code link that takes you to the code for that example. The actual library code is included in the HTML file by building the lib each time with only the needed requirements taken from the name of the visualization and the build.json file. The required library code is built by the build.py file. In order to create a new visualization you need to set up the server environment to include test JavaScript files for your new visualization and also you need to add the new visualization files into the Source folder.Starting Price: Free -
46
SvelteKit
SvelteKit
SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. It addresses common development challenges by providing solutions for routing, server-side rendering, data fetching, service workers, TypeScript integration, and more. SvelteKit apps are server-rendered by default, offering excellent first-load performance and SEO benefits, but can transition to client-side navigation to enhance user experience. The framework is designed to grow with developers, allowing them to start simple and add new features as needed. SvelteKit leverages Vite for a fast and feature-rich development experience, including hot module replacement. In short, Svelte is a way of writing user interface components, like a navigation bar, comment section, or contact form, that users see and interact with in their browsers. The Svelte compiler converts your components to JavaScript that can be run to render the HTML for the page and to CSS that styles the page.Starting Price: Free -
47
Omnis Studio
Omnis Software Ltd
Omnis Studio is a cross platform application development environment. Omnis Studio allows application developers and programmers to write application code and business logic once, and deploy their applications on virtually any platform or device, including desktop PCs on Windows and macOS, as well as tablets and phones on iOS, Android and Windows. Support for a large range of client devices is enabled using the Omnis JavaScript Client, a unique JavaScript based technology for rendering the application UI and web forms in a standard web browser on desktops and mobile devices. The integration of data and services is available in Omnis Studio via REST based Web Services, and functionality can be extended within Omnis Studio by utilizing its powerful and flexible external components API. Omnis is headquartered in the UK and has subsidiaries in USA, France and Germany and distributors for many other parts of the world. -
48
Secure My Files
SecuSimple
Secure My Files Mini, or SMF is a JavaScript library for securing documents using end-to-end encryption in the browser. SMF is using symmetric encryption algorithms (AES with a 256-bit cypher) to encrypt and decrypt files. As an application Secure My Files can be used as an application. You can deploy the sources available here on your own server. Everything is static, so any web server will do. As a library It's simple to use SMF as a library. You first need to include the JavaScript script into the page. You can encrypt or decrypt a file, providing a password. Source code is available on Github for everyone to inspect. Anyone can detect issues and contribute, improving security. We and our servers are based in Europe. Build and host your own flavor of Secure My Files. Reuse as a library in your own application.Starting Price: $14.99 one-time payment -
49
Urlbox
Urlbox
Urlbox is the trusted website screenshot service that delivers flawless, full-page captures at scale via a single, developer-friendly API. Designed from the ground up for high-volume, automated screenshots, it renders pages “as meticulously as a designer on macOS,” supports over 100 browser rendering options (including viewport, element and full-page modes), and produces PNG, PDF, video or fully hydrated HTML, Markdown and metadata outputs with custom JavaScript. Whether you need one screenshot or one million before breakfast, Urlbox’s globally distributed, headless-browser infrastructure handles massive workloads without breaking a sweat. It's a single API call that lets you control dimensions, formats, device emulation, authentication, CSS injection, dark mode, banner hiding, and more, ensuring accuracy, consistency, and security for research, compliance, design, marketing, and monitoring.Starting Price: $49 per month -
50
Seneca
Seneca
Seneca is a microservices toolkit for Node.js. It helps you write clean, organized code that you can scale and deploy at any time. Seneca is a microservices toolkit for Node.js. It provides plugins that look after the foundations of your app. This leaves you free to focus on the real, business code. No need to worry about which database to use, how to structure your components, or how to manage dependencies. Just start coding. You write everything as a command. Your commands get called whenever they match a set of properties. Your calling code doesn't know or care, which command gets the work done. One JavaScript object goes in, and another comes out, asynchronously. Instead of modifying an existing microservice, simply add a new one with more functionality. This is a much more scalable way to handle changing requirements without building up technical debt. Use execution scripts to compose your app.
